28651329

素因数分解:

$3^2\times 7^2\times {\mathrm{64969}}^1$

素因数の和:64989

約数の個数: 18

約数和(自身を含む): 48142770

約数和(自身を除く): 19491441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 64969, 194907, 454783, 584721, 1364349, 3183481, 4093047, 9550443, 28651329]

約数ペア:

[(1, 28651329), (3, 9550443), (7, 4093047), (9, 3183481), (21, 1364349), (49, 584721), (63, 454783), (147, 194907), (441, 64969)]